A multi-platform e-commerce system with a virtual cart is disclosed. The system includes one or more processors and a memory device storing a set of instructions that when executed by the one or more processors, causes the one or more processors to: create an internal virtual cart associated with the multi-platform e-commerce system; in response to the creation of the internal virtual cart, create an external virtual cart associated with one or more single e-commerce platforms; in response to every action taken in the internal virtual cart associated with the multi-platform e-commerce system, enable performance of an immediate corresponding action on the external virtual cart associated with the one or more single e-commerce platforms.